Can anyone explain to me how to resolve an error I am getting in the pages editor whereby the blocks have a message that says “This block contains unexpected or invalid content”. As far as I am aware the code is fine and is not invalid. I have tried pressing the Resolve button and also the Convert to HTML button to see what they do, but they didn’t seem to help. The blocks are “custom HTML” blocks in the first instance, so am not sure why it would ask to convert anyway?